Ⅰ. Complete the following dialogue.
Dialogue A
（A：Shop assistant，B：Customer）
A：Can I help you？
B：Yes. I bought a camera in your store and used it for some time，but now the camera doesn’t work properly，it’s not focusing at all！________________（我想你們給我換一個）.
A：Let me have a look. En…yes，it can’t work well！It’s a production problem，indeed！
B：In fact，I used it carefully and took care of it properly by the instruction book.
A：Eh，it gets a good protection. ________________（我能看一下收據嗎）？
B：Here it is！
A：Oh，I am sorry！________________（它已經過了保修期）. We can’t provide the aftersales service for you！
B：Yes，it’s my fault！But you can look for the record of my expenditure in your computer！As a matter of fact，I’m the member of your store！________________（我是你們的老客戶了，能不能享有點特權呢）？
A：Please wait a second！Yes，and you have a good credit expenditure in our store！So，hmm…we can give you a privilege that we will give a replacement for you！
B：Thanks for your good service and extra help！
A：It’s my pleasure！
Dialogue B
（A：Customer service representative，B：Mr.Wilson）
A：Hello，City Water Service，how may I help you today？
B：I’m calling concerning my water bill. ________________（我覺得你們上個月多收了我的錢）.
A：I’m sorry to hear that. Why do you think we charged you too much？
B：The bill is 20 tons of water more than last month.
A：I’m sorry to hear that. Let me ask you a few questions and then I’ll see what I can do.
B：OK. Thank you for your help.
A：Of course，________________（感謝您提醒我們注意這個問題）. Now，how much do you usually pay for your water usage？
B：I usually pay about $20 a month.